/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package org.apache.maven.lifecycle.internal.stub;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.lifecycle.internal.GoalTask;
import org.apache.maven.lifecycle.internal.LifecycleTask;
import org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator;
import org.apache.maven.lifecycle.internal.TaskSegment;
import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoNotFoundException;
import org.apache.maven.plugin.PluginDescriptorParsingException;
import org.apache.maven.plugin.PluginNotFoundException;
import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException;
import org.apache.maven.plugin.version.PluginVersionResolutionException;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Kristian Rosenvold
 */
public class LifecycleTaskSegmentCalculatorStub extends DefaultLifecycleTaskSegmentCalculator {
  public static final String clean = "clean";

  public static final String aggr = "aggr";

  public static final String install = "install";

  public List<TaskSegment> calculateTaskSegments(MavenSession session, List<String> tasks)
      throws PluginNotFoundException, PluginResolutionException, PluginDescriptorParsingException,
      MojoNotFoundException, NoPluginFoundForPrefixException, InvalidPluginDescriptorException,
      PluginVersionResolutionException {
    List<TaskSegment> taskSegments = new ArrayList<TaskSegment>(tasks.size());

    TaskSegment currentSegment = null;

    for (String task : tasks) {
      if (aggr.equals(task)) {
        boolean aggregating = true;

        if (currentSegment == null || currentSegment.isAggregating() != aggregating) {
          currentSegment = new TaskSegment(aggregating);
          taskSegments.add(currentSegment);
        }

        currentSegment.getTasks().add(new GoalTask(task));
      } else {
        // lifecycle phase
        if (currentSegment == null || currentSegment.isAggregating()) {
          currentSegment = new TaskSegment(false);
          taskSegments.add(currentSegment);
        }
        currentSegment.getTasks().add(new LifecycleTask(task));
      }
    }

    return taskSegments;
  }

  public boolean requiresProject(MavenSession session) {
    return true;
  }
}
